Finding the Fourth Proportional to 231,149.21, 318,984.98 and 129,174.66
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Solution
The fourth proportional to 231,149.21, 318,984.98 and 129,174.66 is: 178,260.51
Step by Step Solution
- Step 1: Write the proportion equation
231,149.21 : 318,984.98 = 129,174.66 : x - Step 2: Convert to fraction form
231,149.21/318,984.98 = 129,174.66/x - Step 3: Cross multiply
231,149.21x = 318,984.98 × 129,174.66 - Step 4: Simplify right side
231,149.21x = 41,204,775,690.73 - Step 5: Solve for x
x = 41,204,775,690.73/231,149.21 - Step 6: Final answer
x = 178,260.51
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.